The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Jun. 29, 2009
Cheng Lo, Hsin-Chu, TW;
Yung-lun Lin, Hsin-Chu, TW;
Ching-sheng Cheng, Hsin-Chu, TW;
Chih-jen HU, Hsin-Chu, TW;
Cheng Lo, Hsin-Chu, TW;
Yung-Lun Lin, Hsin-Chu, TW;
Ching-Sheng Cheng, Hsin-Chu, TW;
Chih-Jen Hu, Hsin-Chu, TW;
AU Optronics Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Abstract
A liquid crystal display device uses a first quarter-wave retardation film and a hybrid aligned nematic film to reduce light leakage in dark state for reaching high contrast ratio, and uses multiple-gamma IC to provide different gamma-curve signals for pixels of different colors to solve color shift problem. In addition, the liquid crystal display device may use a second quarter-wave retardation film to reduce light leakage when viewed in a wide angle so as to further provide higher contrast ratio.